package sanyueer;

import string.Point;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo {
    public static void main(String[] args) {
        Collection c=new ArrayList();
        c.add(new Point(4,5));
        c.add(new Point(5,6));
        c.add(new Point(6,7));
        System.out.println(c);
        Point p=new Point(4,5);
        boolean contains= c.contains(p);
        System.out.println("是否包含:"+contains);
        c.remove(p);
        System.out.println(c);

        Collection cc=new ArrayList();
        Point pp=new Point(4,5);
        cc.add(pp);
        System.out.println("pp:"+pp);
        System.out.println("cc:"+cc);
        pp.setX(321);
        System.out.println("pp:"+pp);
        System.out.println("cc:"+cc);
    }
}
